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one/include/ClusterPool.h
Pavel Czerný 8e7ff2ed36
F #6103: Last set of CppCheck issues (#2481) 
(cherry picked from commit 4a9662a551)
(cherry picked from commit d7b7303f8f)
2023-02-07 08:56:52 +01:00

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/* -------------------------------------------------------------------------- */
/* Copyright 2002-2023, OpenNebula Project, OpenNebula Systems */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); you may */
/* not use this file except in compliance with the License. You may obtain */
/* a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* -------------------------------------------------------------------------- */
#ifndef CLUSTER_POOL_H_
#define CLUSTER_POOL_H_
#include "Cluster.h"
#include "PoolSQL.h"
#include "OneDB.h"
class ClusterPool : public PoolSQL
{
public:
ClusterPool(SqlDB * db,
const VectorAttribute * vnc_conf,
const std::vector<const SingleAttribute *>& encrypted_attrs);
~ClusterPool(){};
/* ---------------------------------------------------------------------- */
/* Constants for DB management */
/* ---------------------------------------------------------------------- */
/**
* Name for the "none" cluster
*/
static const std::string NONE_CLUSTER_NAME;
/**
* Identifier for the "none" cluster
*/
static const int NONE_CLUSTER_ID;
/**
* Name for the default cluster
*/
static const std::string DEFAULT_CLUSTER_NAME;
/**
* Identifier for the default cluster
*/
static const int DEFAULT_CLUSTER_ID;
/* ---------------------------------------------------------------------- */
/* Cluster Resources */
/* ---------------------------------------------------------------------- */
/**
* Get a free VNC port in the cluster. It will try first base_port + id
* @param oid of the cluster
* @param vm_id of the ID requesting the port
* @param port to free
*/
int get_vnc_port(int oid, int vm_id, unsigned int& port)
{
int rc = -1;
if ( auto cluster = get(oid) )
{
rc = cluster->get_vnc_port(vm_id, port);
update_vnc_bitmap(cluster.get());
}
return rc;
}
/**
* Release a previously allocated VNC port in the cluster
* @param oid of the cluster
* @param port to free
*/
void release_vnc_port(int oid, unsigned int port)
{
if ( auto cluster = get(oid) )
{
cluster->release_vnc_port(port);
update_vnc_bitmap(cluster.get());
}
}
/**
* Mark a VNC port as in-use in the cluster.
* @param oid of the cluster
* @param port to set
*
* @return 0 on success, -1 if the port was in-use.
*/
int set_vnc_port(int oid, unsigned int port)
{
int rc = -1;
if ( auto cluster = get(oid) )
{
rc = cluster->set_vnc_port(port);
update_vnc_bitmap(cluster.get());
}
return rc;
}
/* ---------------------------------------------------------------------- */
/* Methods for DB management */
/* ---------------------------------------------------------------------- */
/**
* Allocates a new cluster, writting it in the pool database. No memory is
* allocated for the object.
* @param name Cluster name
* @param oid the id assigned to the Cluster
* @param error_str Returns the error reason, if any
*
* @return the oid assigned to the object, -1 in case of failure
*/
int allocate(std::string name, int * oid, std::string& error_str);
/**
* Gets an object from the pool (if needed the object is loaded from the
* database). The object is locked, other threads can't access the same
* object. The lock is released by destructor.
* @param oid the Cluster unique identifier
* @return a pointer to the Cluster, nullptr in case of failure
*/
std::unique_ptr<Cluster> get(int oid)
{
return PoolSQL::get<Cluster>(oid);
}
/**
* Gets a read only object from the pool (if needed the object is loaded from the
* database). No object lock, other threads may work with the same object.
* @param oid the Cluster unique identifier
* @return a pointer to the Cluster, nullptr in case of failure
*/
std::unique_ptr<Cluster> get_ro(int oid)
{
return PoolSQL::get_ro<Cluster>(oid);
}
/**
* Drops the Cluster from the data base. The object mutex SHOULD be
* locked.
* @param objsql a pointer to a Cluster object
* @param error_msg Error reason, if any
* @return 0 on success,
* -1 DB error,
* -2 object is a system cluster (ID < 100)
* -3 Cluster's User IDs set is not empty
*/
int drop(PoolObjectSQL * objsql, std::string& error_msg) override;
/**
* Bootstraps the database table(s) associated to the Cluster pool
* @return 0 on success
*/
static int bootstrap(SqlDB * _db)
{
std::ostringstream oss_bitmap;
int rc;
rc = Cluster::bootstrap(_db);
rc += _db->exec_local_wr(
BitMap<0>::bootstrap(one_db::cluster_bitmap_table, oss_bitmap));
return rc;
};
/**
* Dumps the Cluster pool in XML format. A filter can be also added to the
* query
* @param oss the output stream to dump the pool contents
* @param where filter for the objects, defaults to all
* @param sid first element used for pagination
* @param eid last element used for pagination, -1 to disable
* @param desc descending order of pool elements
*
* @return 0 on success
*/
int dump(std::string& oss, const std::string& where, int sid, int eid,
bool desc) override
{
return PoolSQL::dump(oss, "CLUSTER_POOL", "body",
one_db::cluster_table, where,
sid, eid, desc);
};
/**
* Generates the cluster part of the ACL filter to look for objects. This
* filter is generated for objects that can be part of a cluster
* @param acl_filter stream to write the filter
* @param auth_object to generate the filter for
* @param cids vector of cluster ids
*/
static void cluster_acl_filter(std::ostringstream& filter,
PoolObjectSQL::ObjectType auth_object, const std::vector<int>& cids);
/**
* Returns the Datastore Clusters performing a DB query
* @param oid Datastore ID
* @param cluster_ids Will contain the Cluster IDs
* @return 0 on success
*/
int query_datastore_clusters(int oid, std::set<int> &cluster_ids);
/**
* Returns the VNet Clusters performing a DB query
* @param oid VNet ID
* @param cluster_ids Will contain the Cluster IDs
* @return 0 on success
*/
int query_vnet_clusters(int oid, std::set<int> &cluster_ids);
/**
* Adds a resource to the specifyed cluster and update the clusters body.
* @param type Resource type
* @param cluster Cluster in which the resource will be included
* @param resource_id Id of the resource
* @param error_msg error message
* @return 0 on success
*/
int add_to_cluster(PoolObjectSQL::ObjectType type, Cluster* cluster,
int resource_id, std::string& error_msg);
/**
* Removes a resource from the specifyed cluster and update the clusters body.
* @param type Resource type
* @param cluster Cluster from which the resource will be removed
* @param resource_id Id of the resource
* @param error_msg error message
* @return 0 on success
*/
int del_from_cluster(PoolObjectSQL::ObjectType type, Cluster* cluster,
int resource_id, std::string& error_msg);
/**
* Updates the cluster vnc bitmap.
* @cluster the cluster to be updated.
* @return 0 on success
*/
int update_vnc_bitmap(Cluster* cluster)
{
return cluster->update_vnc_bitmap(db);
}
private:
/**
* VNC configuration for clusters
*/
const VectorAttribute vnc_conf;
/**
* Factory method to produce objects
* @return a pointer to the new object
*/
PoolObjectSQL * create() override
{
return new Cluster(-1,"",0, &vnc_conf);
};
};
#endif /*CLUSTER_POOL_H_*/
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